Exhaust Gas Recirculation (EGR) Vacuum Regulator (EVR) Solenoid
The EVR solenoid is an electromagnetic device which is used to regulate the vacuum supply to the EGR valve. The solenoid contains a coil which magnetically controls the position of a disc to regulate the vacuum. As the duty cycle to the coil increases, the vacuum signal passed through the solenoid to the EGR valve also increases. Vacuum not directed to the EGR valve is vented through the solenoid vent to atmosphere. Note that at 0% duty cycle (no electrical signal applied), the EVR solenoid allows some vacuum to pass, but not enough to open the EGR valve.
EVR SOLENOID DATA
| Duty Cycle (%) | Vacuum Output | |||||
|---|---|---|---|---|---|---|
| Minimum | Nominal | Maximum | ||||
| In-Hg | kPa | In-Hg | kPa | In-Hg | kPa | |
| 0 | 0 | 0 | 0.38 | 1.28 | 0.75 | 2.53 |
| 33 | 0.55 | 1.86 | 1.3 | 4.39 | 2.05 | 6.9 |
| 90 | 5.69 | 19.2 | 6.32 | 21.3 | 6.95 | 23.47 |
| EVR resistance: 26-40 Ohms | ||||||